The set of all -D varieties of degree in an -D projective space into an -D projective space .
References
Wilson, W. S.; Chern, S. S.; Abhyankar, S. S.; Lang, S.; and Igusa, J.-I. ``Wei-Liang Chow.'' Not. Amer. Math. Soc. 43,
1117-1124, 1996.